Cohan Plaut Rajsich

Cohan Plaut Rajsich LLP is a litigation-focused law firm with offices in Boston, Massachusetts, serving as its headquarters, and New York, New York. Founded in 1985, the firm describes itself as providing legal assistance to emerging growth companies, international businesses, and individuals across practice areas including business matters, business litigation, and real estate. While the firm does not appear in major national rankings like AmLaw or Chambers for Intellectual Property, its presence in two major legal markets suggests a regional business litigation practice.

In its litigation practice, Cohan Plaut Rajsich LLP handles "Business Trade Secret and Intellectual Property Misuse Cases." However, the firm explicitly states on its website, "Please note that we are not a patent law firm." Despite this, the firm has represented plaintiffs in significant patent infringement actions, indicating an involvement in enforcing patent rights within its broader litigation offerings. Based on tracked appearances, the firm's patent litigation work has exclusively been on the plaintiff side, representing patent owners seeking to enforce their intellectual property.

A prominent patent litigation matter for the firm was its representation of Uniloc USA, Inc. in Uniloc USA, Inc. et al. v. Microsoft Corporation. This case involved allegations of infringement concerning a patent for software product registration technology designed to combat unauthorized copying of software, specifically relating to Microsoft's Product Activation feature in Word XP, Word 2003, and Windows XP. A jury initially awarded Uniloc $388 million in damages, which at the time was noted as "the fifth largest patent verdict in history." Although the Federal Circuit later reversed certain aspects and remanded for a new trial on damages, significantly impacting the "25 percent rule of thumb" in patent damages calculations, the parties ultimately reached a "final and mutually agreeable resolution" in March 2012. The firm also highlights recovering "over $17 million arising out of a patent infringement case."

There is no public indication that Cohan Plaut Rajsich LLP maintains a dedicated practice before the Patent Trial and Appeal Board (PTAB) for inter partes review (IPR) or post-grant review (PGR) proceedings. Robert D. Cohan, a founding partner, is a key attorney in the firm's litigation practice and was involved in the notable Uniloc v. Microsoft case. He, along with founding partners Jonathan D. Plaut and Lee E. Rajsich, have been recognized as "Massachusetts Super Lawyers" in the field of litigation.